using Dicom;
using Dicom.Network;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PacsView3D
{
    public partial class QRFrm : Form
    {
        private static string QRServerHost = ConfigurationManager.AppSettings["QRHOST"];
        private static string QRServerAET = ConfigurationManager.AppSettings["QRAETITLE"];
        private static int QRServerPort = int.Parse(ConfigurationManager.AppSettings["QRPORT"]);
        private static string AET = ConfigurationManager.AppSettings["AETITLE"];
        DicomClient client = new DicomClient();
        private static List<QRstudy> qrstudys = new List<QRstudy>();

        public QRFrm()
        {
            InitializeComponent();
            panel1.Visible = false;
            client.NegotiateAsyncOps();
        }
        public void iniPanel ()
        {
            panel1.Left = this.Width / 2 - panel1.Width / 2;
            panel1.Top = (this.Height - groupBox1.Height) / 2 - panel1.Height / 2;
        }

        private void btnQuery_Click(object sender, EventArgs e)
        {
            dataGridView1.DataSource = null;
            qrstudys = new List<QRstudy>();
            DateTime dt1 = this.datetimeStart.Value;
            string startData = dt1.ToString("yyyyMMdd");
            DateTime dt2 = this.datetimeEnd.Value;
            string endData = dt2.ToString("yyyyMMdd");
            string studyDate = startData + "-" + endData;
            var request = CreateStudyRequestByParam(txtName.Text,txtPatientid.Text,txtAccessNumber.Text,txtModality.Text, studyDate);


            request.OnResponseReceived += ResponseReceived;
           
            client.AddRequest(request);
            client.Send(QRServerHost, QRServerPort, false, AET, QRServerAET);
            dataGridView1.DataSource = qrstudys;
        }
        private void ResponseReceived(DicomCFindRequest req, DicomCFindResponse response)
        {
            QRstudy qrstudy = new QRstudy();
            DebugStudyResponse(response);
            qrstudy.patientID = GetTagValue(response, DicomTag.PatientID);
            qrstudy.patientName = GetTagValue(response, DicomTag.PatientName);
            qrstudy.sex = GetTagValue(response, DicomTag.PatientSex);
            qrstudy.birthDate = GetTagValue(response, DicomTag.PatientBirthDate);
            qrstudy.accessionNumber = GetTagValue(response, DicomTag.AccessionNumber);
            qrstudy.Modality = GetTagValue(response, DicomTag.ModalitiesInStudy);
            qrstudy.studyDate = GetTagValue(response, DicomTag.StudyDate);
            qrstudy.studyDesc = GetTagValue(response, DicomTag.StudyDescription);
            qrstudy.studyUID = GetTagValue(response, DicomTag.StudyInstanceUID);
            qrstudys.Add(qrstudy);
        }
        public string GetTagValue(DicomCFindResponse response, DicomTag dt)
        {
            try
            {
                return response.Dataset?.GetSingleValue<string>(dt);
            }
            catch(Exception ex)
            {
                return "";
            }
        }
        public static DicomCFindRequest CreateStudyRequestByParam(string patientName,string patientID,string accessionNumber, string modality, string studyDate)
        {
            // there is a built in function to create a Study-level CFind request very easily: 
            // return DicomCFindRequest.CreateStudyQuery(patientName: patientName);

            // but consider to create your own request that contains exactly those DicomTags that
            // you realy need pro process your data and not to cause unneccessary traffic and IO load:

            var request = new DicomCFindRequest(DicomQueryRetrieveLevel.Study);

            // always add the encoding
            request.Dataset.AddOrUpdate(new DicomTag(0x8, 0x5), "ISO_IR 100");

            // add the dicom tags with empty values that should be included in the result of the QR Server
            request.Dataset.AddOrUpdate(DicomTag.PatientName, "");
            request.Dataset.AddOrUpdate(DicomTag.PatientID, "");
            request.Dataset.AddOrUpdate(DicomTag.PatientSex, "");
            request.Dataset.AddOrUpdate(DicomTag.ModalitiesInStudy, "");
            request.Dataset.AddOrUpdate(DicomTag.StudyDate, "");
            request.Dataset.AddOrUpdate(DicomTag.StudyTime, "");
            request.Dataset.AddOrUpdate(DicomTag.AccessionNumber, "");
            request.Dataset.AddOrUpdate(DicomTag.StudyInstanceUID, "");
            request.Dataset.AddOrUpdate(DicomTag.StudyDescription, "");

            // add the dicom tags that contain the filter criterias
            if (patientName.Length>0 )
            {
                request.Dataset.AddOrUpdate(DicomTag.PatientName, patientName);
            }
            else
            {
                request.Dataset.AddOrUpdate(DicomTag.PatientName, "*");
            }
            if (patientID.Length>0)
            {
                request.Dataset.AddOrUpdate(DicomTag.PatientID, patientID);
            }
            if (accessionNumber.Length > 0)
            {
                request.Dataset.AddOrUpdate(DicomTag.AccessionNumber, accessionNumber);
            }
            if (modality.Length > 0)
            {
                request.Dataset.AddOrUpdate(DicomTag.Modality, modality);
            }
            if (studyDate.Length > 0)
            {
                request.Dataset.AddOrUpdate(DicomTag.StudyDate, studyDate);
            }

            return request;
        }
        public static void DebugStudyResponse(DicomCFindResponse response)
        {
            if (response.Status == DicomStatus.Pending)
            {
                // print the results
                Console.WriteLine($"Patient {response.Dataset.GetSingleValueOrDefault(DicomTag.PatientName, string.Empty)}, {(response.Dataset.TryGetString(DicomTag.ModalitiesInStudy, out var dummy) ? dummy : string.Empty)}-Study from {response.Dataset.GetSingleValueOrDefault(DicomTag.StudyDate, new DateTime())} with UID {response.Dataset.GetSingleValueOrDefault(DicomTag.StudyInstanceUID, string.Empty)} ");
            }
            if (response.Status == DicomStatus.Success)
            {
                Console.WriteLine(response.Status.ToString());
            }
        }


        public static DicomCMoveRequest CreateCMoveByStudyUID(string destination, string studyUID)
        {
            Log4NetHelper.WriteLogDebug("Cmove:destination:" + destination, null);
            Log4NetHelper.WriteLogDebug("Cmove:studyUID:" + studyUID, null);
            var request = new DicomCMoveRequest(destination, studyUID);
            // no more dicomtags have to be set
            return request;
        }

        private void dataGridView1_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            int selectindex = dataGridView1.CurrentRow.Index;
            QRstudy study = qrstudys[selectindex];
            string studyUID = study.studyUID;
            Log4NetHelper.WriteLog("studyUID" + studyUID);
            DicomClient client = new DicomClient();
            var cMoveRequest = CreateCMoveByStudyUID(AET, studyUID);
            bool? moveSuccessfully = null;
            panel1.Visible = true;
            int imageNo = 0;
            cMoveRequest.OnResponseReceived += (DicomCMoveRequest requ, DicomCMoveResponse response) =>
            {
                //Log4NetHelper.WriteLogDebug("Cmove:response.Status:" + response.Status.State, null);
                //Log4NetHelper.WriteLog("Cmove:response.Status:" + response.Status.State);
                imageNo = imageNo + 1;
                this.label7.Text = "正在回调图像请等候...（" + imageNo.ToString() +"）";
                if (response.Status.State == DicomState.Pending)
                {
                    Console.WriteLine("Sending is in progress. please wait: " + response.Remaining.ToString());
                }
                else if (response.Status.State == DicomState.Success)
                {
                    Console.WriteLine("Sending successfully finished");
                    moveSuccessfully = true;
                }
                else if (response.Status.State == DicomState.Failure)
                {
                    //Log4NetHelper.WriteLogDebug("response.Status.Description:" + response.Status.Description, null);
                    //Log4NetHelper.WriteLog("response.Status.Description:" + response.Status.Description);
                    Console.WriteLine("Error sending datasets: " + response.Status.Description);
                    moveSuccessfully = false;
                    panel1.Visible = false;
                    MessageBox.Show("图像回调失败！");

                }
                Console.WriteLine(response.Status);
            };
            client.AddRequest(cMoveRequest);
            client.Send(QRServerHost, QRServerPort, false, AET, QRServerAET);

            if (moveSuccessfully.GetValueOrDefault(false))
            {
                Console.WriteLine("images sent successfully");
                //MessageBox.Show("图像回调成功！");
                panel1.Visible = false;
                this.Hide();
                // images sent successfully from QR Server to the store scp
            }
        }

        private void QRFrm_Resize(object sender, EventArgs e)
        {
            iniPanel();
        }
    }
}